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            In This Section
        Automated Track Inspection Program (ATIP)
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                Geometry Car Fleet - 216
                Geometry Car Fleet - 217
                Geometry Car Fleet - 218
                Geometry Car Fleet - 219
                Geometry Car Fleet - 220
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   Related Documents
          FRA DOTX 220 Track Geometry Car System Capabilities
                
                About the FRA DOTX-220
    

    
    
          Computers on a desk.The Office of Safety owns and operates the DOTX-220 to support its mission to reduce track geometry caused derailments nationwide. The DOTX-220 is a towed vehicle that surveys approximately 40,000 miles of United States mainline railroad each year.





A white train on a track.The DOTX-220:

- Entered service in 2007
- Operates in either direction in towed mode
- Is equipped with a track geometry measurement system to measure gage, alignment and track surface
- Is equipped with a vehicle track interaction (VTI) system to measure truck and car body forces in g's
- Is equipped with a differential global positional system to provide high accuracy GPS coordinates to each foot surveyed
              
      
    
          Last updated: Sunday, November 17, 2019 U.S. DEPARTMENT OF TRANSPORTATION

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